and his claim that he can give the wealthy those tax breaks and still close the deficit, that claim is mathematically impossible according to the tax policy center. romney's fuzzy math has put his surrogates in a bit of a tough spot. here is paul ryan trying to explain the impossible on fox us in yesterday. >> how much does that cost? >> it's revenue neutral. >> it's not revenue neutral unless you take away deductions. and we'll get to that. the first half lowering the tax rates does that cost $5 trillion -- >> no. >> you haven't given me the math. >> oh, it would take me too long to go through the math. >> come on i don't have the time to tell you how the math works. then he follows that awkward statement with another statement today. >> i like chris. i didn't want to get into all of any math of this because everybody would start changing the channel. >> jennifer: kind of funny. i isn't know candidates were worried about fox news ratings, and it wasn't just paul ryan having difficulty with this issue. governor bob mcdonald today was also at a loss to explain this math. >> where is the